You won’t be able to stream video at high quality if your Internet connection is poor. That is why many streaming platforms automatically adapt to the speed of your connection. Hot on the heels of LG's first 42-inch OLED TV came the 42-inch Sony A90K, which uses the same panel. The Sharp Q7300U series of 4K TVs is the one member of the company's Q-series that does come with the Roku TV platform built-in (the Sharp Q7000U and Q7500 series do not). The bonus here is that they’re HDR-compatible and come with a beefier twin 10W speaker set-up. Operating system: 40-inch, 42-inch and 43-inch TVs didn't always come with a smart TV operating system in the past but they often do now. What you're looking for, ideally, is a well-maintained operating system like Roku TV, LG's webOS or Samsung's Tizen operating system. If you go with a TV that uses a proprietary operating system (basically an operating system exclusive to that one TV) you might have some serious issues down the road. On the other hand, if the TV still turns on and off at random, try doing a reset to see if it fixes it.

These days, it's all about HDMI, which is used to connect everything from set-top boxes to video streamers, Blu-ray players to games consoles. Thanks to ARC/eARC (Audio Return Channel / Enhanced Audio Return Channel), a single HDMI connection can even be used to output sound to an AV receiver or soundbar at the same time as it receives a video signal. If the TV is not on mute, and you have plugged in an external device through the HDMI port, make sure that the device is set to output on the TV. It's a great option for gaming, too, thanks to that superb picture punch and a feature set that includes support for 4K/120Hz, VRR and ALLM, and an HGiG mode for excellent HDR accuracy.If there is still no sound, try using different audio outputs. If you have a soundbar or a pair of headphones, try connecting them. Roku is a stable smart TV operating system that many brands use. Since it’s a widely used platform, you can expect support for a lot of apps. The best 42-inch TV we've tested is the LG OLED42C3PUA. It's a fantastic TV that looks amazing in a dark room but is also capable enough in a brighter environment. It delivers superb picture quality thanks to its near-infinite contrast ratio and has an excellent selection of additional features. Its built-in LG webOS interface has a massive selection of streaming apps, making it a great choice for a dorm or other small space. It's also great for watching movies with good image processing features, like Dolby Vision and DTS advanced video and audio format support.

You’ll even find a couple of the best gaming TVs below. If you want to plug in a PlayStation 5 or Xbox Series X, LG's 43-inch C3 comes with HDMI 2.1 functionality for variable refresh rate and gaming in 4K at 120fps on all of its ports – it's basically a flagship TV in a smaller frame. If you are still unable to connect to the Wi-Fi, the problem is likely with the distance between the router and the TV. Problems connecting to the internet are one of the most common issues users of smart TVs run into, regardless of brand. For ease, we've included 40-inch TVs as well as the best 42-inch TVs and 43-inch TVs in this guide.There’s more to contrast than that, including plenty of mathematics and specialist lighting measurements. CNET has a great guide on contrast and the pros and cons of relying on it as a metric for purchasing TVs. There are a few factors that can affect internet connectivity, so how do you identify what’s preventing your TV from connecting to the Internet? In this guide, we've also included several 42-inch and 43-inch TVs, which might give you a bit of extra screen space if the best 40-inch TVs seem a touch too small. What about 42-inch TVs and 43-inch TVs? Gaming performance was another plus point for the Omni QLED. It did a great job of handling graphically intense moments, with smooth motion processing and minimal delay thanks to its low 10ms input lag time. The picture quality delivered was crisp as well, thanks to Dolby Vision gaming support. However, it sadly doesn't have 4K 120Hz support, but this is not something you get in TVs at this price range anyway.